site.pro

01Overview 02DNS 03WHOIS 04Subdomains 05Email 06TLS

Checking SPF, DKIM, and DMARC

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Tools

DNS Lookup
WHOIS Lookup
RDAP Lookup
Subdomain Finder
Email Security Check
SSL and TLS Certificate Checker

digga is open source under AGPL 3.0.

GitHub

Checking SPF, DKIM, and DMARC

Email authentication

The basics are in place but can be hardened.

2Pass
2Warning
0Fail
2Not set

SPF

Warning

Authorizes which servers may send mail for the domain

SPF is published but could be tightened.

Policy: -all
DNS lookups: 9 / 10

Ends in -all (hardfail): unauthorized senders are rejected.
Uses 9 of 10 allowed DNS lookups. Close to the limit.

v=spf1 a ip4:3.123.96.42 include:spf.protection.outlook.com include:retailSPF.smtp.com include:turbo-smtp.com include:sendgrid.net include:spf.mydomainprovider.com ip4:168.245.17.47 -all

DKIM

Pass

Cryptographically signs outgoing mail (best-effort selector probe)

DKIM key published for 4 known selectors.

Selectors: selector2, s1, s2, mail

Found a DKIM key at selector2._domainkey.site.pro
Found a DKIM key at s1._domainkey.site.pro
Found a DKIM key at s2._domainkey.site.pro
Found a DKIM key at mail._domainkey.site.pro

DMARC

Warning

Tells receivers what to do with mail that fails SPF and DKIM

DMARC is published but not fully enforcing.

Policy: p=reject
Subdomains: sp=none
Coverage: 100%

Policy p=reject: failing mail is rejected outright.
No rua address: you receive no aggregate reports to monitor abuse.

v=DMARC1; p=reject; sp=none

MTA-STS

Not set

Enforces TLS for inbound mail and prevents downgrade attacks

No MTA-STS policy. Inbound mail can be delivered without TLS.

TLS-RPT

Not set

Receives reports about TLS delivery failures

No TLS-RPT record. You get no reports about failed TLS delivery.

BIMI

Pass

Displays your verified brand logo in supporting inboxes

BIMI is published.

Logo: https://site.pro/bimi.svg

A logo (l=) is published.

v=BIMI1; l=https://site.pro/bimi.svg

Checks query live DNS over Cloudflare and the public MTA-STS policy endpoint. DKIM selectors cannot be listed from DNS, so DKIM detection probes common provider selectors only.